A representative for the radio station said Kiedis was taken from the venue in an ambulance because he was suffering from extreme stomach pain, according to Billboard. It forced the Chili Peppers to cancel their performance.

RHCP bassist Flea made the announcement onstage at the Irvine Meadows Amphitheater and apologized to the crowd at the 16,000-capacity venue. “Anthony is on his way to the hospital right now and we’re unable to play this evening,” he said. “We are devastated about it. We’re really sad. We love you so much. We live to rock... But unfortunately, there’s a medical thing that happened and he needed to deal with it.”

Blink-182 were brought on as a last-minute replacement and Weezer ended up closing the concert.